12132303021 has 12 divisors (see below), whose sum is σ = 17526134080. Its totient is φ = 8087419080.

The previous prime is 12132302999. The next prime is 12132303031. The reversal of 12132303021 is 12030323121.

It is not a de Polignac number, because 12132303021 - 2⁷ = 12132302893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12132302985 and 12132303003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132303031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42210 + ... + 161388.

Almost surely, 2^12132303021 is an apocalyptic number.

It is an amenable number.

12132303021 is a deficient number, since it is larger than the sum of its proper divisors (5393831059).

12132303021 is a wasteful number, since it uses less digits than its factorization.

12132303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130496 (or 130493 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12132303021 its reverse (12030323121), we get a palindrome (24162626142).

The spelling of 12132303021 in words is "twelve billion, one hundred thirty-two million, three hundred three thousand, twenty-one".